Home / 20,556,898,720.56-28,377,815,595.93-12,947,128,279.29

Finding the Fourth Proportional to 20,556,898,720.56, 28,377,815,595.93 and 12,947,128,279.29

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Solution

The fourth proportional to 20,556,898,720.56, 28,377,815,595.93 and 12,947,128,279.29 is: 17,872,891,422.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556,898,720.56 : 28,377,815,595.93 = 12,947,128,279.29 : x
  2. Step 2: Convert to fraction form
    20,556,898,720.56/28,377,815,595.93 = 12,947,128,279.29/x
  3. Step 3: Cross multiply
    20,556,898,720.56x = 28,377,815,595.93 × 12,947,128,279.29
  4. Step 4: Simplify right side
    20,556,898,720.56x = 367,411,218,806,542,106,624
  5. Step 5: Solve for x
    x = 367,411,218,806,542,106,624/20,556,898,720.56
  6. Step 6: Final answer
    x = 17,872,891,422.04

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.